PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1212AS133-3Stem,valve

Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · NSN 4820-00-977-3150 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-977-3150 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-977-3150. Primary manufacturer part number: 1212AS133-3.
Features
  • Stem,valve — FSC 4820
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
  • 4 verified cross-references
  • Primary manufacturer: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,valve, cataloged under National Stock Number 4820-00-977-3150, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-977-3150
Primary Part Number1212AS133-3
Item NameStem,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4320-01-022-8451058051 INTERCHANGEABLE
Impeller,pump,centrifugal
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
6210-01-216-7857 INTERCHANGEABLE
Light,indicator
2520-01-284-598258051 INTERCHANGEABLE
Universal Joint,vehicular
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
1212AS133-3 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
58051CP Naval Inventory Control Point Mechanicsburg (USA)
58051 Ryan Industries Div of Cordon International Corp (USA)
58051 Cosmodyne, Llc Dba Cosmodyne Llc (USA)
Related Parts
4320-01-022-8451INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
058051
6210-01-216-7857INTERCHANGEABLE
LIGHT,INDICATOR
2520-01-284-5982INTERCHANGEABLE
UNIVERSAL JOINT,VEHICULAR
58051

Frequently Asked Questions

What is NSN 4820-00-977-3150?

NSN 4820-00-977-3150 is a Stem,valve, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-977-3150?

NSN 4820-00-977-3150 has 4 cross-referenced part numbers: 1212AS133-3 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 58051CP (Naval Inventory Control Point Mechanicsburg), 58051 (Ryan Industries Div of Cordon International Corp), 58051 (Cosmodyne, Llc Dba Cosmodyne Llc).

What NSN replaces 4820-00-977-3150?

There are 3 known substitutes for 4820-00-977-3150: 4320-01-022-8451, 6210-01-216-7857, 2520-01-284-5982. Verify interchangeability with system specifications before substitution.

What are the specifications of 1212AS133-3?

Key specifications for 1212AS133-3: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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